12255558 has 32 divisors (see below), whose sum is σ = 28294656. Its totient is φ = 3466368.

The previous prime is 12255533. The next prime is 12255587. The reversal of 12255558 is 85555221.

It is a super-3 number, since 3×12255558³ (a number of 22 digits) contains 333 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2910 + ... + 5742.

It is an arithmetic number, because the mean of its divisors is an integer number (884208).

Almost surely, 2^12255558 is an apocalyptic number.

12255558 is an abundant number, since it is smaller than the sum of its proper divisors (16039098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12255558 is a wasteful number, since it uses less digits than its factorization.

12255558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948.

The product of its digits is 20000, while the sum is 33.

The square root of 12255558 is about 3500.7939099581. The cubic root of 12255558 is about 230.5566730117.

The spelling of 12255558 in words is "twelve million, two hundred fifty-five thousand, five hundred fifty-eight".